152 lines
2.6 KiB
C#
152 lines
2.6 KiB
C#
#region License
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/* MoonWorks - Game Development Framework
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* Copyright 2021 Evan Hemsley
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*/
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/* Derived from code by Ethan Lee (Copyright 2009-2021).
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* Released under the Microsoft Public License.
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* See fna.LICENSE for details.
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* Derived from code by the Mono.Xna Team (Copyright 2006).
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* Released under the MIT License. See monoxna.LICENSE for details.
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*/
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#endregion
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#region Using Statements
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using System;
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using MoonWorks.Math;
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#endregion
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namespace MoonWorks.Graphics
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{
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public struct NormalizedShort2 : IPackedVector<uint>, IEquatable<NormalizedShort2>
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{
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#region Public Properties
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public uint PackedValue
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{
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get
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{
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return packedValue;
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}
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set
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{
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packedValue = value;
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}
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}
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#endregion
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#region Private Variables
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private uint packedValue;
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#endregion
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#region Public Constructors
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public NormalizedShort2(Vector2 vector)
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{
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packedValue = Pack(vector.X, vector.Y);
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}
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public NormalizedShort2(float x, float y)
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{
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packedValue = Pack(x, y);
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}
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#endregion
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#region Public Methods
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public Vector2 ToVector2()
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{
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const float maxVal = 0x7FFF;
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return new Vector2(
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(short) (packedValue & 0xFFFF) / maxVal,
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(short) (packedValue >> 0x10) / maxVal
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);
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}
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#endregion
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#region IPackedVector Methods
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void IPackedVector.PackFromVector4(Vector4 vector)
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{
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packedValue = Pack(vector.X, vector.Y);
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}
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Vector4 IPackedVector.ToVector4()
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{
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return new Vector4(ToVector2(), 0.0f, 1.0f);
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}
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#endregion
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#region Public Static Operators and Override Methods
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public static bool operator !=(NormalizedShort2 a, NormalizedShort2 b)
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{
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return !a.Equals(b);
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}
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public static bool operator ==(NormalizedShort2 a, NormalizedShort2 b)
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{
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return a.Equals(b);
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}
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public override bool Equals(object obj)
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{
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return (obj is NormalizedShort2) && Equals((NormalizedShort2) obj);
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}
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public bool Equals(NormalizedShort2 other)
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{
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return packedValue.Equals(other.packedValue);
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}
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public override int GetHashCode()
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{
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return packedValue.GetHashCode();
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}
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public override string ToString()
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{
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return packedValue.ToString("X");
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}
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#endregion
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#region Private Static Pack Method
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private static uint Pack(float x, float y)
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{
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const float max = 0x7FFF;
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const float min = -max;
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uint word2 = (uint) (
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(int) MathHelper.Clamp(
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(float) System.Math.Round(x * max),
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min,
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max
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) & 0xFFFF
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);
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uint word1 = (uint) ((
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(int) MathHelper.Clamp(
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(float) System.Math.Round(y * max),
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min,
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max
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) & 0xFFFF
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) << 0x10);
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return (word2 | word1);
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}
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#endregion
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}
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}
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